add dri3proto
add presentproto
add libxshmfence
libdrm: update to latest
mesalib: bump to latest and enable nouveau gallium driver

gallium was previously completely disabled, as i mistakenly believed
that it depends on LLVM.
however, it's only required for the radeonsi and llvmpipe drivers,
plus for r600's openCL support, according to nouveau developers.
with nouveau gallium driver enabled, nouveau_dri.so gets built which is
required for wine's direct draw/direct 3d support.

additionally, "xa" was disabled, since the Makefile rules for
libxatracker.so use some hacks (-nostdlib, etc) which cause link errors
(libgcc2.c:1180: undefined reference to `_Unwind_Resume').
according to http://git.alpinelinux.org/cgit/aports/tree/main/mesa/APKBUILD
this is functionality related to vmware, which we dont need anyway.

mesa-10.patch was taken from alpine.
wine: depend on glu and mesa

without mesa existing at wine build time, direct draw/3d doesnt work
at all and gives completely misleading error messages.
glu is required so glu32.dll gets built which is required for most
windows apps using opengl.